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车辆作用下桥梁冲击系数分析

DOI: 10.3969/j.issn.1674-0696.2013.01.02, PP. 5-8

Keywords: 达朗贝尔原理,三角级数法,桥面不平度,冲击系数,车辆参数,d’Alembertprinciple,trigonometricseriesmethod,bridgesurfaceroughness,impactcoefficient,vehicleparameters

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Abstract:

:?应用达朗贝尔原理推导了1/4车辆模型和桥梁的振动平衡方程;采用三角级数法生成各级桥面不平度序列;用数值方法分析了桥面平整度、车速及车辆参数对桥梁冲击系数的影响。结果表明:桥面不平度对桥梁冲击系数影响很大;冲击系数随着速度的增加而发生波动;合理的车辆参数可以减小对桥梁的冲击作用;车辆固有频率同样是影响冲击系数的一个不容忽视的因素。

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